Waterloo Falls is a stretch of rapids on South Santiam River in Linn County, Oregon, in the Willamette Valley region. It lies about 4.2 miles east of South Lebanon and roughly 17.1 miles southeast of Albany as the crow flies.
The Willamette Valley is a broad, flat agricultural lowland between the Coast Range and the Cascades, with oak savanna and Douglas fir on its margins. Waterfalls occur mostly on the valley’s edges, where tributaries drop off the surrounding foothills.
It is the only recorded rapid in Linn County. Marten Rapids, is about 29.3 miles away.
Waterloo Falls is located at 44.4958° N, 122.8192° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this rapid yet.